Golf ball

Abstract

A golf ball which maintains a good shot feel and attains a long flight distance which comprises a solid center, a thread rubber layer formed by winding a thread rubber around the solid center and a cover formed on the thread rubber layer, wherein the solid center has a diameter of 30 to 38 mm and a surface hardness, measured by a JIS-C hardness tester, of 40 to 80, the difference in hardness between the center and surface of the solid center being within 5, the cover being formed of a base resin containing an ionomer resin as a main component and the cover having a flexural modulus of 300 to 600 MPa and a hardness, measured by a Shore D-scale hardness tester, of 60 to 80.

What is claimed is: 
     
       1. A golf ball comprising a solid center, a thread rubber layer formed by winding a thread rubber around said solid center and a cover formed on the thread rubber layer, the solid center having a diameter of 30 to 38 mm and a surface hardness, measured by a JIS-C hardness tester, of 40 to 80, the difference in hardness between the center and surface of the solid center being within 5, the cover being formed of a base resin containing an ionomer resin as a main component, the cover having a flexural modulus of 300 to 600 MPa and a hardness, measured by a Shore D-scale hardness tester, of 60 to 80. 
     
     
       2. The golf ball according to claim 1, wherein the acid content of the ionomer resin is from 5 to 30% by weight and 5 to 80% of the carboxyl groups is neutralized with a metallic ion.